Walmart Stock Plunges Despite Strong Earnings Beat: What's Behind the Drop

Walmart (WMT) stock plummeted by over 9% on August 20, wiping out more than $80 billion in market value and marking one of the company's worst single-day performances in recent years. The apparent contradiction lies in Walmart exceeding Wall Street's expectations for headline earnings but missing the market's forecasts for future growth.

Despite delivering a strong fiscal second-quarter earnings beat and raising its full-year outlook, investors remain concerned about the slowdown in Walmart U.S.'s comparable sales. The company reported a 2.6% year-over-year increase in same-store sales, falling short of Wall Street expectations of 3.7% to 3.8%. This metric has slowed for two consecutive quarters, raising questions about the strength of underlying consumer demand.

Walmart's broader business ecosystem continues to grow, with global e-commerce sales increasing by 23%, and Walmart Connect advertising revenue growing by 38%. Membership-related income also rose by 17%, demonstrating that the company's digital ecosystem is becoming an increasingly important source of long-term profit growth. However, short-term investors should exercise caution as the stock may remain volatile until U.S. sales growth and profitability trends show clearer improvement.

For long-term investors, Walmart's competitive advantages remain compelling, particularly its scale, value positioning, and growing digital ecosystem. The company now expects net sales for fiscal 2027 to grow by 4% to 5%, up from its previous forecast of 3.5% to 4.5%. Adjusted operating income is projected to increase by 7% to 8.5%, compared with prior guidance of 6% to 8%.